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Zhong X, Hu JJ, Yao SL, Zhang RJ, Wang JJ, Cai DG, Luo TK, Peng Y, Liu SJ, Wen HR. Gd(III)-based metal-organic frameworks and coordination polymers for magnetic refrigeration. CrystEngComm 2022. [DOI: 10.1039/d1ce01633d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
As the alternatives of expensive and increasingly shortage 3He for ultralow-temperaturerefrigeration, molecule-based magnetorefrigerant materials have attracted much attention in the past decades. Among them, Gd(III)-based metal-organic frameworks and coordination polymers...
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Liu W, Liang F, Chen Y, Song H, Feng J, Shen J, Lin Z, Tu H, Zhang G. Large Magnetocaloric Effect in Li 3K 9Gd 3(BO 3) 7 Crystal Featuring Sandwich-Like Three-Dimensional Framework. Inorg Chem 2021; 60:6796-6803. [PMID: 33843230 DOI: 10.1021/acs.inorgchem.1c00633] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A new Gd-based borate crystal, Li3K9Gd3(BO3)7, has been successfully obtained via the high-temperature solution method using Li2O-K2O-B2O3 self-flux. It crystallizes in monoclinic space group P2/n (no. 10) with lattice parameters a = 11.3454(6) Å, b = 9.9881(4) Å, c = 11.4467(7) Å, α = γ = 90 o, β = 114.782(7) o, and Z = 2. Li3K9Gd3(BO3)7 exhibits an intriguing sandwich-like three-dimensional (3D) framework constructed from [Gd-B-O]∞ layers, KOn (n = 6 and 8) polyhedra, and LiO4 tetrahedra, in which [Gd-B-O]∞ layers are built from two types of GdO8 polyhedra and triangular BO3 units. Magnetic measurements showed that Li3K9Gd3(BO3)7 exhibits a large magnetocaloric effect with -ΔSm = 39.3 J kg-1 K-1 at 2.0 K for ΔH = 7 T, which is slightly higher than that of the commercial gadolinium gallium garnet under the same conditions. The powder X-ray diffraction, infrared spectrum, and UV-vis-NIR diffuse reflectance spectrum were also performed to characterize Li3K9Gd3(BO3)7. The electronic band structures, partial density of states, and refractive indices of Li3K9Gd3(BO3)7 were investigated via the first-principle calculations.
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Affiliation(s)
- Wang Liu
- Key Laboratory of Functional Crystals and Laser Technology, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China.,Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Fei Liang
- Key Laboratory of Functional Crystals and Laser Technology, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China.,State Key Laboratory of Crystal Materials and Institute of Crystal Materials, Shandong University, Jinan 250100, People's Republic of China
| | - Yuwei Chen
- Key Laboratory of Functional Crystals and Laser Technology, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China.,Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Huimin Song
- Key Laboratory of Functional Crystals and Laser Technology, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China.,Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Jingcheng Feng
- Key Laboratory of Functional Crystals and Laser Technology, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China.,Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Jun Shen
- Key Laboratory of Cryogenics, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China
| | - Zheshuai Lin
- Key Laboratory of Functional Crystals and Laser Technology, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China
| | - Heng Tu
- Key Laboratory of Functional Crystals and Laser Technology, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China.,Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Guochun Zhang
- Key Laboratory of Functional Crystals and Laser Technology, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China.,State Key Laboratory of Crystal Materials and Institute of Crystal Materials, Shandong University, Jinan 250100, People's Republic of China.,Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
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Yu H, Song R, Kong Y, Cao T, Chen Y. Synthesis, crystal structure and spectral properties of a copper(II) complex with flavonoxylacetate ligand. J COORD CHEM 2020. [DOI: 10.1080/00958972.2020.1755035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Hui Yu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, Hunan, China
| | - Rong Song
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, Hunan, China
| | - Yangyang Kong
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, Hunan, China
| | - Ting Cao
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, Hunan, China
| | - Yun Chen
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, Hunan, China
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Černák J, Harčárová K, Falvello LR, Dlháň Ľ, Titiš J, Boča R. Field induced slow magnetic relaxation in a zig-zag chain-like Dy(iii) complex with the ligand o-phenylenedioxydiacetato. NEW J CHEM 2020. [DOI: 10.1039/d0nj02276d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Three relaxation channels in field-induced SMM [Dy(PDOA)(NO3)(H2O)2]n·nH2O with DyO9 chromophore.
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Affiliation(s)
- Juraj Černák
- Department of Inorganic Chemistry
- Faculty of Sciences
- P. J. Šafárik University in Košice
- 041 54 Košice
- Slovakia
| | - Katarína Harčárová
- Department of Inorganic Chemistry
- Faculty of Sciences
- P. J. Šafárik University in Košice
- 041 54 Košice
- Slovakia
| | - Larry R. Falvello
- Departamento de Química Inorgánica
- Instituto de Ciencia de Materiales de Aragón (ICMA)
- University of Zaragoza-CSIC
- E-50009 Zaragoza
- Spain
| | - Ľubor Dlháň
- Institute of Inorganic Chemistry
- Slovak University of Technology
- 812 37 Bratislava
- Slovakia
| | - Ján Titiš
- Department of Chemistry
- Faculty of Natural Sciences
- University of SS Cyril and Methodius, nám. J. Herdu 2
- 917 01 Trnava
- Slovakia
| | - Roman Boča
- Department of Chemistry
- Faculty of Natural Sciences
- University of SS Cyril and Methodius, nám. J. Herdu 2
- 917 01 Trnava
- Slovakia
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